At least nine people have been killed in a two-story house in Covina, California, after a man dressed in a full Santa Claus outfit opened fire at a Christmas Eve party and then set the house ablaze. Covina is a city in Los Angeles County, California about 22 miles (35 km) east of downtown Los Angeles.

According to local police, the Christmas party at the 1100 block of East Knollcrest Drive was attended by about 25 people. Trend News Agency said that the gunman fired two semi-automatic handguns and used an apparently home-made pressurized device to spread some kind of accelerant. As the guests tried in vain to escape, the gunman used his ‘present’ to spray inflammable liquid that started the raging blaze. Reports from the scene said Molotov cocktails were also used by the madman.

Media reports said the gunman was plotting vengeance against his ex-wife. Prime suspect, Bruce Jeffrey Pardo, age 45, six-foot-three-inch, 250 pound (1.9 meter, 113 kilogram), an electrical engineer, is long time Roman Catholic church usher and a laid-off aerospace worker. He worked with ITT Electronic Systems, Radar Systems, in Van Nuys from February 2005 to July 2008, and as an engineer at Northrop Grumman for five months in 2005, according to Court records. He had also worked for about nine years at NASA’s Jet Propulsion Laboratory in Pasadena until 1994.

Pardo’s ex-sister-in-law, who escaped from the Covina house alive with her injured daughter, called 911. Police on Friday released her 911 audio.

Msnbc.com has reported that Pardo “has brown hair and blue eyes, and known to frequent La Crescenta and La Verne.” Court records reveal that Mr Pardo’s wife acrimoniously divorced him last September. The divorce decree was finalized December 18. Until earlier this year, he lived in the Sylmar house with his ex-wife and her three children. The marriage lasted barely a year. However, Pardo held no criminal record and had no history of violence.

There is some speculation that the divorce may have been caused by Pardo concealing a paraplegic child from a previous relationship. Matthew, his nine-year-old son, by another former girlfriend, Elena Lucano, became brain damaged when he fell into a backyard swimming pool on Jan. 6, 2001. Pardo kept this child a secret from his wife. Pardo owed her $10,000 as part of the divorce settlement, according to court documents that detailed a bitter split. He also lost a dog he doted on and did not get back a valuable wedding ring. Pardo complained in a court declaration that Sylvia Pardo was living with her parents, not paying rent, and had spent lavishly on a luxury car, gambling trips to Las Vegas, meals at fine restaurants, massages and golf lessons.

After the mass murder, Pardo put on his street clothes and drove his rental Dodge Caliber car to the house of his brother, Jimmy Pardo, in Sylmar, approximately 30 miles away from the crime scene, where he committed suicide from a self-inflicted gunshot wound to the head. His brother was not present in the home and he broke inside to enter in. It was believed that Pardo intended to flee to Canada by plane as he had bought an airline ticket to a flight there from Los Angeles to Moline, Illinois. However due to suffering from severe third-degree burns on both arms stemming from the blaze, he decided to go against the initial plan.

Police had found $17,000 cling-wrapped on his legs inside a girdle, the car key, and his rental car that had been parked on Herrick Avenue, one block from his brother’s house, which had been rigged by remnants of his Santa suit that would ignite a flame and detonate the car with black powder if removed. Also recovered from the scene were four 13-round capacity handguns that were each empty, and at least 200 rounds of ammunition. Suggesting that what had been inside the car was being treated as a threat, police fired an incendiary device into it, destroying and burning it.

The police found on early Thursday, Mr Pardo bore a single gunshot wound to the head. According to LA County coroner’s official Ed Winter, the bodies found in the ashes were “extremely charred and burned.” All three of Sylvia Pardo’s children — Selina, Sal and Amanda — survived. According to the Scott Nord, the Ortega family lawyer, “the entire family was wiped out, and there’s basically like 16 orphans.”

Three other party guests have injuries, according to police. A 16-year-old girl was shot in the back, and an eight-year-old girl suffered facial gunshot wounds that were not life-threatening, while a 20-year-old woman had a broken ankle, after jumping from a second-story window, the police specified. About 80 firefighters put off the fire that soared fifteen metres (40 to 50 feet) high for more than one hour. The police discovered two handguns at the scene, and found two more in the in-laws’ house. Media reports on Friday said the 16-year-old daughter of Sylvia Pardo was released from Los Angeles County-USC Medical Center.

Meanwhile, investigators served a search warrant at Pardo’s Montrose house, where they retrieved evidence of high-octane racing fuel, five empty boxes for semi-automatic handguns, as well as two shotguns.

Covina police Lt. Pat Buchanan on Saturday said they are looking for Pardo’s rented gray 1999 RAV4, with California license plate 5RYD562. Police have found the second rental car Saturday night in a Glendale, California but found no bombs nor any explosives.

The police also revealed Saturday the names of nine people missing since the Christmas Eve massacre occurred. They are Pardo’s ex-wife, Sylvia Pardo, 43; her parents, Joseph Ortega, 80, and Alicia Ortega, 70; Alicia Ortiz, 46, and her son, Michael Ortiz, 17; Sylvia’s brother, Charles Ortega, 50, and his wife, Cheri, 45; another brother, James Ortega, 52, and his wife, Teresa, 51, according to Lt. Buchanan. “Hopefully, we’ll get positive identifications early next week,” Covina Police Chief Kim Raney said.

A murder-suicide is an act in which an individual kills one or more other persons immediately before, or at the same time as, killing him or herself. According to the psychiatrist Karl A. Menninger, murder-suicide or murder and suicide are interchangeable acts – suicide sometimes forestalling murder, and vice versa.